/**
 * +----------------------------------------------------------------------
 * | 「e家宜业」
 * +----------------------------------------------------------------------
 * | Copyright (c) 2020-2024 https://www.chowa.cn All rights reserved.
 * +----------------------------------------------------------------------
 * | Licensed 未经授权禁止移除「e家宜业」和「卓佤科技」相关版权
 * +----------------------------------------------------------------------
 * | Author: contact@chowa.cn
 * +----------------------------------------------------------------------
 */

import * as util from '../util';

/**
 *  Rule for validating a regular expression pattern.
 *
 *  @param rule The validation rule.
 *  @param value The value of the field on the source object.
 *  @param source The source object being validated.
 *  @param errors An array of errors that this rule may add
 *  validation errors to.
 *  @param options The validation options.
 *  @param options.messages The validation messages.
 */
function pattern(rule, value, source, errors, options) {
    if (rule.pattern) {
        if (rule.pattern instanceof RegExp) {
            // if a RegExp instance is passed, reset `lastIndex` in case its `global`
            // flag is accidentally set to `true`, which in a validation scenario
            // is not necessary and the result might be misleading
            rule.pattern.lastIndex = 0;
            if (!rule.pattern.test(value)) {
                errors.push(util.format(options.messages.pattern.mismatch, rule.fullField, value, rule.pattern));
            }
        } else if (typeof rule.pattern === 'string') {
            const _pattern = new RegExp(rule.pattern);
            if (!_pattern.test(value)) {
                errors.push(util.format(options.messages.pattern.mismatch, rule.fullField, value, rule.pattern));
            }
        }
    }
}

export default pattern;
